I can't imagine myself "playing for fun". In my opinion, the pleasures in the game are very clearly associated with winning. And if there are no wins, for me, continuing to play becomes a problem. And even a series of losses makes or would make me think about continuing to play. I can only repeat that I do not get pleasure from losses. But if you play just for fun, then losses are just part of your game. Most likely, even a long series of losses will not be considered a "streak of bad luck". The same thing happens when you play for research purposes. Since your losses are small and controllable in amount, there is no point in doing anything special after a long series of "failures".